Anesthetic Agarose

Anesthetic agarose is a laboratory gel prepared by incorporating an anesthetic into molten agarose to immobilize small biological specimens during observation or manipulation. As the gel cools, it forms a supportive matrix while the anesthetic diffuses into the specimen, reducing neural or muscular activity and limiting movement without requiring physical restraint. In biology, this preparation helps position delicate organisms for microscopy, microinjection, dissection, and time-lapse imaging, improving image stability and procedural control. Because concentration, temperature, and exposure time affect both gel properties and specimen viability, careful preparation is important for obtaining reliable results while minimizing physiological stress.

Anesthetic Agarose - Related Videos

Research

JoVE EoE - Immunodiagnostics

Agarose-Based Preparation of Human Precision-Cut Lung Slices

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2025

In this video, we describe a procedure to inflate isolated human lungs with agarose and prepare human precision-cut lung slices. The prepared ex vivo lung slices can be used for further immunologic experiments.

Education

JoVE Core - Pharmacology

Inhalational Anesthetics: Overview

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2024

Inhalation anesthetics are drugs that induce general anesthesia upon inhalation. They work by increasing the sensitivity of GABAA receptors or inhibiting NMDA receptors, leading to a decrease in central nervous system activity. The depth of anesthesia can be rapidly adjusted by changing the concentration of the inhaled gas. Some common examples of inhalational anesthetics include volatile liquids like isoflurane, desflurane, sevoflurane and gases like xenon and nitrous oxide. Isoflurane, a...

Local Anesthetics: Pharmacokinetics

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2023

The potency and duration of action of local anesthetics (LAs) are determined by their pharmacokinetics. Pharmacokinetics describes how LAs are absorbed, distributed, metabolized, and eliminated from the body. When administered to the vascular tissues, LAs are quickly absorbed and enter the systemic circulation, reducing their localized effects. Adding vasoconstrictors such as epinephrine to LAs reduces their absorption into the systemic circulation, making them clinically effective. The...

DNA Agarose Gel Electrophoresis

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2021

Agarose gel electrophoresis is a laboratory technique commonly used to separate DNA fragments by size. However, it can also be used to isolate and purify DNA fragments using a gel extraction protocol. Gel extraction follows five major steps: running gel electrophoresis to separate fragments, isolating the individual bands, extracting DNA from those bands, and removing the dye and salts from the extracted mixture to obtain pure DNA. In cloning experiments, both the insert and vector DNA...

Whole Lung Agarose Inflation: A Method of Preparing Lungs for Ex vivo Live Imaging

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2023

This video describes a method of preparing lungs for ex vivo live imaging to study interactions between cancer cells and stromal cells, using agarose for inflation. In the sample protocol, agarose inflation procedure is described before observing live cellular interactions.

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